Systems of Two Linear Equations in Two Variables

SAT Math· difficulty 2/5

Solve: xy=6x - y = 6 and x+y=14x + y = 14. What is yy?

  • A

    4

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  • B

    6

  • C

    8

  • D

    2

Explanation

Subtracting: 2y=8-2y = -8, y=4y = 4.

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